- Patients must be disease-free of prior invasive malignancies for >= 5 years with the exception of curatively-treated basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the cervix; patients with a previous ipsilateral or contralateral invasive breast cancer, or with bilateral synchronous cancers, are not eligible; patients with previous ipsilateral or contralateral ductal in situ carcinoma (DCIS) are not eligible